Draft appliance



Sept. 30. 1924. 1,510,391

. T. J. FEELY DRAFT APPLIANCE Filed Feb. 11 1924 Patented Sept. 30, 1924.

' than J'. FEELY, OE IQULUTH, MINNESOTA, ASSIGNOR 01" THEEE- EIGI-ITHS TO MARK i ELLIOTT AND ONE-FOURTH TO AUGUST IBESTE, BOTH OF VIRGINIA, MINNESGTA.

DRAFT APPLIANCE.

Application filed February 11, 1924. Serial No. 691,887.

To aZZ "whom it may concern:

Be it known that I, THOMAS J. FEELY, a citizen of the United States, residing at Duluth, in the county of St. Louis and State of h iinnesotmhave invented certain new and useful Improvements in Draft Appliances, of. which the following is a specification, reference being had therein to the accompanying drawing. Z

This invention relates to draft appliances for stoves and other forms of heaters, the principal object being to provide means whereby to increase the efliciency of the heater. i

Another object is to provide as simple a device of this character as possible, and one by which portionsof the products of combustion from the heater may bereturned to the same for further utilization as heating means. 1 i

A further object of the present invention is to provide means whereby that portion of the products of combustion whichare returned to the combustion chamber within the heater may be so conducted inthe maximum state of heat possible.

Other objects and advantages of the peculiar construction will appear in the further description of the invention.

Referring now to the accompanying draw-- ing forming part of this application and in which like reference characters indicate like parts:

Figure 1 is an end elevation of a length of stove pipe fitted with my improved draft controlling device.

Figure 2 is a vertical section on the line 2-2 of Figure 1, and

Figure 3 is a perspective view of the auxiliary or return flue.

1 represents a length of common stove pipe, which is applied directly to the stove or furnace ordinarily about a thimble or ring 2 projecting therefrom; the wall of the furnace being indicated at3.

Within the lower portion of the stove pipe 1 is installed an auxiliary flue or duct indicated at 4, it being approximately the full length of the stove pipe and occupying preferably about one-third of the internal area of same. This flue is preferably made of a single sheet of metal, similar to that of which the pipe 1 is composed, except that the inner end wall 5 may be of a separate piece and securely attached to the side walls in any desired manner.

The upper wall 6 of the auxiliary fine is flat, while the side and under walls 7 are of the same general contour as that of the lower half of the pipe 1. The flat wall 6 of this flue is cutaway arcuately as at 8 adjacent the end wall 5 so as to provide a passageway for certain of the products of combustion as the same is deflected by the semi-circularly shaped damper 9 installed transverse the pipe 1 upon any form of suitable shaft 10, and is designed to be manually manipulated as is common in stove pipe dampers, this shaft being installed in close juxtaposition to the uppermost edge of the wall 5 when the auxiliary fine 4 is installed within the pipe. This installation comprises preferably a simple screw bolt 11 adjacent the end wall 5 and passing through the lower wall. of the pipe 1 and the adjacent wall 7 of the auxiliary fine.

It is apparent that this simple fastening means is readily accessible through the arcuately shaped opening 8 in the auxiliary flue and that being adjacent the innermost end of the flue permits of the opposite end being slightly raised or separated from the wall of the stove pipe so that the thimble or ring 2 maybe slipped therebetween as clearly shown in Figure 2 of the drawing, thus providing a space 12 intermediate of the major portion of the auxiliary flue and the wall of the stove pipe.

The object of this specific form of installation is to direct the returning gases or products of combustion as nearly as possible to the fire where they were initially created and to allow same to remain as hot as possible, they not coming in direct contact with the outer walls of the stove pipe. It is apparent that when the device is not used as means for returning certain of the gases back to the fire, the damper 9 may be dropped downwardly against the opening 8 of the auxiliary flue and entirely close same, or it may be turned in the extreme opposite direction when even a greater capacity of the flue may be employed for directing the draft in that certain of the products of combustion would doubtless traverse outwardly through the auxiliary flue and join the other outgoing portions of the smoke and gases over the wall 5, and.

that the damper 9 may be adjusted at any desired angle towards the stove to regulate not only the draft through the pipe but the desired proportion of gases which may be returned to the stove or furnace through the auxiliary flue.

As a means to insure the damper 9 remaining in any predetermined position, I install an auxiliary mounting or bracket'13 for the screw threaded end of the shaft 10 and between which bracket and the outer wall. of the stove pipe is installed a nut 14. which may be adjusted as desired and the wing nut 15 drawn up tightly against the bracket thus insuring a tight frictional mounting of the shaft 10 which may be adjusted as desired so that the damper will not become jarred out of any position in which it is placed.

lVhile I have shown the device as being installed horizontally, itis to be understood that the same may be applied in "upright position with similar results, and it has been found in practice that when properly installed and adjusted material benefit results from same both in the matter of combustion and resultant heat produced.

of an auxiliary conduit within and extendinglongitudinally of theflue and adjacent one side thereof, said conduit having an opening in the end farthermost from the combustion chamber communicating with the interior of thefiue and the opposite end discharging directly into the combustion chamber, and a damper within the flue for deflecting portions of the products of combustion into the conduit.

opposite end, and a damper within the pipe adjacent the partially opened end, acting as a damper for the pipe or a closure for the partial openingin the auxiliary conduit.

4. In combination, a stove pipe, an auxiliary conduit removably positioned within the stove pipe and adjacent one side thereof, said conduit being entirely open at one end and partially open at the opposite end, and

a damper within the pipe adjacent the partially opened end, acting as a damper for the pipe or a closure for the partial opening in the auxiliary conduit.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

r THOMAS J. FEELY. Witnesses:

' AUGUST Basra,

S. GEOQSTEVENS. 

